Question
Ionisation energy for hydrogen atom in the ground state is E. What is the ionisation energy of Li++ atom in the 2nd excited state
Answer: Option A
:
A
Ionisation energy of atom in nth state EnαZ2n2
For hydrogen atom in ground state (n = 1) and Z = 1 ⇒E=E0 ....... (i)
For Li++ atom in 2nd excited state n = 3 and Z = 3, hence E′=E032×32=E0 ........ (ii)
From equation (i) and (ii) E′=E
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:
A
Ionisation energy of atom in nth state EnαZ2n2
For hydrogen atom in ground state (n = 1) and Z = 1 ⇒E=E0 ....... (i)
For Li++ atom in 2nd excited state n = 3 and Z = 3, hence E′=E032×32=E0 ........ (ii)
From equation (i) and (ii) E′=E
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